Lock



J. WOJCIK.

LOCK.

APPLICATION FILED NOV. I2. I920.

Patented Apr. 12, 1921.

2 SHEETS SHEET I.

FIG. 1

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I INVENTOR ll fi flj bk A TTORNE Y.

J. WOJCIK.

LOCK.

1,374,793 APPLICATION FILED NOV. 12, 1920. Patented Apr. 12,1921.

2 SHEETS-SHEET 2- FIG. 3

FIG. 4,

FIG. 5.

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IN VEiV TQR. a u a cz/lr d4 TTORNEY. I

UNITED STATES JOHN WOJCIK, OF CHICAGO, ILLINOIS.

LOCK.

Specification of Letters Patent.

Patented Apr. 12 19 21.

- Application filed November 12, 1820. SeriaI No. 423,579.

To aZZwkom it may concern. 7 y Be it known that I, JOHN WoJoIK, citizenof Poland, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Locks, ofwhich the following is a specification.

This invention relates to certainnew and useful improvements in looksand has for one of its objects to provide a sliding gravity bolt withinthe lock easing -adapted for engagement with a keeper bolt when the sameis in its lowered closed position. I

A further Object of the invention is to provide a lock embodying agravity bolt slidable within the casingand adapted to be elevatedthrough the medium of a key inserted within the lock casing while a gearwithin the lock casing is adapted to have rack teeth of .the gravitybolt moved into engagement therewith for sliding the bolt within thecasing to move the same to its released position.

lVith the above and other objects in view, the present inventionconsists in the novel form, combination and arrangement of partshereinafter more fully described in connection with the accompanyingdraw-I ings, in which like reference characters indicate similar partsthroughout the several views.v

In the drawings, V

Figure l is a fragmentary elevational view of a portion of a door andframe with the present improved lock operatively positioned thereon, V

Fig. 2 is a view similar to Fig. l with the lock casing removed showingthe sliding gravity bolt with the bolt elevated in dotted line positionsfor engagement with the shifting gear,

Fig. 3 is a cross sectional view taken on line III-III of Fig. 2 showingthe rotatable gear for shifting the slidable gravity bolt 4 is a crosssectional view taken on line IV-IV of Fig. 2 showing the key elevatingthe bolt to engaging position with the shifting gear,

Fig. 5 is a perspective view of the gravity sliding bolt removed fromthe casing,

Fig. 6 shows views of the key for elevatin the sliding bolt, and

jig. 7 shows views of thekey for rotating the gear shifting the slidingbolt.

iReferring more in detail to the accomto the outer side of panyingdrawings, there is illustrated the P01131011 of a door 1 andframe 2 uponthe innerface of which door a lock casing 3 is mounted while a keepercasing 4 is mounted upon the door frame 2 and secured thereto by a bolt5 extending through the casing anddoor frame. The lock casing 3 issecured to the door 1 by transverse bolts 6 and upper and lower bolts 7at the swinging end of the door, a face plate 8 being secured v the dooras shown in Figs. 1 and 3. f

A gravity sliding bolt of the type more clearly shown in Figs. 2 and'5embodies a body portion 9 having ahook nose 10 at its forward endwhilethe upper edge thereof is provided with a series of rack teeth 11. Apair of elongated openings 12 is provided in the bolt body 9 with anupwardly directed oifset recess 13 at the rear ends thereof." The bolt 9within thecasing 31s supported on the transverse supporting bolts 6 asshown in Fig.2. 7

The lower wall of the casing 3 is provided with a downwardly directedarcuate extension 14 through which an anglekey opening 15 extends. Forelevating the bolt within the casing, the key shown in Fig. 6 isemployed, the same embodying a fingergrip 16 having a shank 17 withangularly ex-,

atter' tending head portions 18 and 19, the being notched at its edge asat 20'as clearly shown in Figs. 1 and 6. .When the bolt 9 is inthe'position 'shown in Fig. 2, the same is at its limit of downward movementwith the transverse bolts 16 received in the slot recesses 13 while thehook nose 10 is in engagement with the bolt 5 in the keeper casmg 4;. vWhen the key 16 is inserted through the key slot 15 and rotated the headportion 19 thereof is projected to cause the notched a rectangular borewithin'which the ke 24 shown in Fig. 7 is adapted to be inserte forrotating the gear. The door 1 is provided with an opening 25 tofacilitate insertion rack teeth 11 of the bolt are moved into en- 1gagernent with the gear 21, and by rotating the gear in the desireddirection, the bolt is shifted in a similar way either to withdraw thebolt into the casing 8 or proj eot the same into the keeper casing 4.

A key hole guard is associated with the key openin 15 extending throughthe face plate 8 of tne door 1 and embodies anangle bracket 26 and aswinging plate 27 having cooperating flanges 28 through which theshackle 29 of a padlock extends, thereby closing the key opening 15 asshown in big. 1;

Assuming that the sliding gravity bolt is in the locked position shownin Fig. 2, and it being desired to free the same from engagement withthe keeper bolt 5, the key 16 is inserted in the opening 15 and rotatedto cause the angle head 19 thereof to engage the lower edge of the boltto elevate the same to position the attaching bolts 6 within theelongated openings 12. The key 24 in serted into the bearing 28 of thegear 21 is rotated and by meshing with the rack teeth 11 upon thesliding bolt the bolt 9 is withdrawn into the casing 3. In shifting thebolt to locked position, the key 16 may be withdrawn from the casing 3and the rack gear 21 rotated to project the bolt from the casings) andwhen the oliset recesses 13 01": the openings 12 are positioned over thebolts 6, the sliding bolt 9 will drop by gravity with the hook nose 10thereof engaging the keeper bolt 5 while the bolts 6' are received inthe bolt recesses 13., The padlock 29 associated with the guard plate 27prevents the operation of the lock from the outer side of the doorwithout first exposing the key hole. 7

While there is herein shown and described the preferred embodiment ofthe invention, it is nevertheless to be understood that minor changesmay be made therein without departin from the spirit and scope of theinvention as claimed.

"Nhat is claimed as new is:

1. A lock of the type described comprising a casing, a gravity slidingbolt mounted therein, said bolt having elongated slots and 2 upper edgeof said bolt and a rotatable gear carried by said casing adapted forengage 'znent with the bolt rack teeth for shifting the bolt within thecasing.

2. A look of the type described comprising a casing, a gravity slidingbolt mounted therein said bolt havin elongated slots and oilsetrecessescommunicating with the slots,

transverse bolts carried by the casing for supporting the bolt andextending through said slots, a key for elevating the sliding bolt toposition the transverse bolts in the elongated slots, rack teeth "t medon the upper edge of said bolt a rotatable gear carried by said'casingadapted for engagement with the bolt rack teeth for shitting the boltwithin. the casing, a tubular bearing for said gear and akey insertedwithin said bearing for rotating the same.

3. A lock of the type described comprising a casing, a gravity slidingbolt mounted therein, said bolt having elongated slots and offsetrecesses communicating with the slots, transverse bolts carried by thecasing for supporting the bolt and extending through said slots, a keyfor elevatin the sliding bolt to position the transverse bolts in theelongatedslots, rack teeth. formed on the upper edge of said bolt, arotatable gear carried by said casing adapted for engagement with thebolt rack teeth for shifting the bolt within the casing, a tubularbearing for said gear, key inserted within said bearing tor'rotating thesame and a hinged guard plate overlying the key opening through whichthe key is inserted for elevating the sliding bolt.

a. A look of the type described comprising a casing, a gravity slidingbolt mounted therein, cooperating means carried by the bolt and casingfor holding the bolt in locked position means for elevating the bolt torender ineii'ective the means for holding the same locked andcooperating devices carried by the casing and bolt for shifting the boltwithin the casing.

in testimony whereoi I aliix my signatur JOHN WoJoiK.

